Windscreen



- March 25, 1924. 1,488,421 G. WELCH WINDSCREEN Filed Apri l 1 8. 1922 'f/"G 2 FIG 5 I nvemoh Gdorge Wel'ch Al y Patented Mar. 25, 1924.

GEORGE WELCH, 0F PER-TH, WESTERN AUSTRALIA, AUSTRALIA.

WINDSCREEN.

Application filed April 18, 1322. Serial No. 554,485.

To all whom it may concern:

Be it known that GEORGE Vfrnon, of Perth, in the State of Western 'Australia, Commonwealth of Australia, has invented an Improvement in l/Vindscreens, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to improvements.

held in any position relative to a common axis, whereby it becomes possible to completely reverse or alter the relative positions of the upper and the lower sections of the screen.

To enable the invention to be more readil appreciated, reference will now be made to the accompanying drawings showing a preferred embodiment thereof. These drawings must not, however, be construed as limiting the scope of the invention, which will be more particularly defined in the appended claims.

In the drawings Figure 1 indicates a front elevation of one side of the double windscreen, mainly in section except the anti-glare portion and its appurtenant parts.

Figure 2 is a side elevation, looking from right to left, of the supporting standard that forms part of Figure 1.

Figure 3 is a front elevation of such supporting standard. 7

Figure 4- is a side elevation of the coned washer, and

Figure 5 is a front elevation of such coned washer.

Referring to the drawings, 10 indicates one of the supporting standards carrying the sashes 11 and 12, of which the former holds the glare-proof, while the latter supports the clear glass. As shown, the double screen is in the position necessary when driving under glaring conditions, that is to say, the anti glare section fprms the upper or road-viewing screen.

The supporting standard is suitably enlarged near its centre, andin such enlarge-- inent there are internally fashioned two conical holes 13 and 14, one commencing on each side, such conical holes being connected by a passage. In the conical hole 13 there is held a conical washer 15 which is slotted at 16. The conical hole 14: has a double truncated cone 17 held. against its face, such double truncated hollow cone being in shape similar to a hollow cone truncated at apex and base. A truncated cone 18 is held against the inner peripheral surface of the double truncated hollow cone 17, and such cone (18) has a bolt 19 integral with or connected thereto as an extension in the axial direction. The shank of the bolt 19 is formed so that it clears the double truncated hollow cone 17 as well as the passage connecting the conical holes 13 and 1d, whilst it conforms to the slot 16, and therefore causes thecone 18 and coned washer 15 to be positively connected if rotation takes place. Near its. end the bolt is threaded in the conventional manner, and turning on such thread is a wing nut 20 by means of which a pressure can be exerted against the coned washer 15, a spring washer 21 being preferably interposed. The efiect caused by tightening the nut 20 is that the cone 18 is pulled against the inner peripheral surface of the hollow double truncated cone 17, whilst the outer peripheral surface of the latter is pulled against the surface of the conical hole 1 1,

the conical washer being simultaneously pulled against the face of the other conical hole 13. This means, of course, that there are three pairs of conical frictional surfaces brought into operative juxtaposition.

The double truncated hollow cone 17 and the cone 18 both have formed integrally therewith lateral extensions 22 and 23 respectively, and such extensions are connected to and thereby support the sashes. These extensions are each provided with stops (not shown) that prevent the sashes being turned nearer t each other than about 90 degrees, although otherwise relative movement is not interfered with.

In operation the double windscreen functions as follows When it is desired to move one or both sections of the screen the wing nut is loosened on each side, whereby the frictional resistance between the various conical surfaces is diminished. This means that the top screen and its sash 11 can be turned, an action which also turns the cone l8, bolt 19, and coned washer 15. In a similar manner the lower screen and sash 12 can be turned, a motion that is of course transmitted to the hollow truncated cone 1?. It will be apparent that the separate movement or the screen sections will permit a large number of positions to suit varying atmospheric conditions. In addition, the relative positions of the two screen sections can be co1n pletely reversed, which means that it glaring conditions no longer prevail, then the clear screen section can be placed in the up-. per position, or conversely. When the desired screen adjustment has been made, the

wing nuts are tightened, whereby consider-' able pressure is set up between the various conical surfaces with a corr sponding increase in the frictional resistance to displacement.

I claim" 1 l. A windscreen comprising the combination of supporting standards; a screen section; a hollow cone attached thereto bearing against a conical surtace on its outer face; another screen section, a cone attached thereto bearing against the inner face of the hollow cone; and means whereby the conical bearing faces can be held in trictional contact so that the screen sections may be supported in any desired relative positions.

shank on the other side of the standard,'and

a nut whereby the cone and washerc-an be pn -ed together and thereby cause frictional contact between the relatively movable conical faces. V

A windscreen comprising'the combination of a supporting standard; a conical hole commencing at one side of the standard; another conical hole commencing at the other side of the standard,'the said holes having a common axis and joining at the centre; a double truncated hollow cone fitting against the peripheral surface of one conical hole; a screen section attached to the double truncated hollow cone; a cone fitting against the inner peripheral surface'of the double truncated hollow cone;a screen section attached t the said cone; a bolt integral with the cone; a conical Washer fitting in the other conical hole, and a nut whereby the cone and conical washer can be pulled together and thereby cause frictional contact between three movable faces.

Dated this 27th day of February, 1922.

GEORGE WELOH.

pairs of relatively 

